Cloning of a Chitinase Gene from Newly Isolated Alkaliphilic Nocardiopsis sp. Strain F96 and Extracellular Production of the Recombinant Protein in Escherichia coliCloning of a Chitinase Gene from Newly Isolated Alkaliphilic Nocardiopsis sp. Strain F96 and Extracellular Production of the Recombinant Protein in Escherichia coliCloning of a Chitinase Gene from Newly Isolated Alkaliphilic Nocardiopsis sp. Strain F96 and Extracellular Production of the Recombinant Protein in Escherichia coli